Winona meteorite

Short description: Meteorite found in the United States

Winona

Type| Primitive achondrite
Group| Winonaite
Parent body| Winonaite-IAB-IIICD
Composition| Enstatite, olivine, meteoric iron, plagioclase, troilite
Country| United States
Region| Arizona
Coordinates|  [ ⚑ ] : 35°12′N 111°24′W﻿ / ﻿35.2°N 111.4°W﻿ / 35.2; -111.4
Observed fall| No
Found date| 1928
TKW| 24 kilograms (53 lb)

The Winona meteorite is a primitive achondrite meteorite. It is the type specimen and by far the largest meteorite of the winonaite group.[1]

## Contents

* 1 Discovery and naming
* 2 Mineralogy
* 3 See also
* 4 References

## Discovery and naming

The Winona meteorite is named after Winona, Arizona. The meteorite is said to be discovered during an archaeological excavation of the Sinagua village Elden Pueblo in September 1928. The Sinagua lived in the village between 1150 and 1275. The meteorite was said to be retrieved from the cist of one of the rooms.[2][3] In fact the meteorite was found at another Sinagua site and not in Elden Pueblo[4] When the meteorite was removed from the cist it fell apart because it was badly weathered. The first description was made in 1929. The authors were of the opinion that the meteorite was too badly weathered to be accurately classified. They estimated that the meteorite was probably a mesosiderite.[5][6]

## Mineralogy

The meteorite consists of enstatite, olivine, meteoric iron, plagioclase, troilite. Accessory minerals include alabandite, apatite, chromite, daubréelite, diopside, graphite.[6]

## See also

* Glossary of meteoritics

## References

1. ↑ M. K. Weisberg; T. J. McCoy; A. N. Krot (2006). "Systematics and Evaluation of Meteorite Classification". in D. S. Lauretta. Meteorites and the early solar system II. Tucson: University of Arizona Press. pp. 19–52. ISBN 978-0816525621. http://haroldconnolly.com/EES 716 Fall 09 Reading/Lecture 1/Background reading/Weisberg_etal_MESSII.pdf. Retrieved 15 December 2012.
2. ↑ "Winona". meteorites.com.au. http://www.meteorites.com.au/favourite/september2003.html.
3. ↑ M. M. Grady Catalogue of Meteorites (5th ed.) Cambridge UP, 2000, p. 528.
4. ↑ A. L. Christenson "J. W. Simmons' account of the discovery of the Winona meteorite."Meteorite10(3):14-16, 2004
5. ↑ Heineman, R. E.; L. F. Brady (1929). "The Winona meteorite". American Journal of Science 18: 477–486. doi:10.2475/ajs.s5-18.108.477. Bibcode: 1929AmJS...18..477H.
6. ↑ 6.0 6.1 Mason, Brian; Jarosewich, E. (31 May 1967). "The Winona meteorite". Geochimica et Cosmochimica Acta 31 (6): 1097–1099. doi:10.1016/0016-7037(67)90083-X. Bibcode: 1967GeCoA..31.1097M.

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Classification|

| By type, class,
clan, group
and grouplet|

| Chondrite|

* Carbonaceous
* CB
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* EH
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|

Achondrite|

| Primitive|

* Acapulcoite
* Brachinite
* IAB
* IIICD
* Lodranite
* Ureilite
* Winonaite

|

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Iron|

* IC
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* IIIAB
* IIIE
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* IVA
* IVB

Stony-iron|

* Mesosiderite
* Pallasite
* Main group
* Eagle Station
* Pyroxene

Structural|

* Ataxite
* Hexahedrite
* Octahedrite

Obsolete terms|

* Amphoterite
* Nonmagmatic meteorite

Mineralogy and
petrology|

* Characteristics
* shock
* TKW
* weathering
* Grains
* chondrule
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* extraterrestrial materials
* meteoric iron
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